The Secret Crownby Chris Kuzneski
King Ludwig II ruled Bavaria for twenty-two years, commissioning extravagant castles throughout his homeland and exhibiting such bizarre behaviour that he was eventually declared insane. According to legend, Ludwig had stockpiled a massive cache of gold and jewels that would finance the construction of the largest castle of all time. But in the years since the king's mysterious death, no one has found any evidence of such a trove. Until now. Jonathon Payne and David Jones are pulled into the mystery by a colleague, who asks them to investigate the legend. They agree, and quickly find themselves in a life-or-death struggle to uncover the truth about Ludwig's death, his mythical treasure, and who would be willing to kill for it.

Robert Ludlum's The Bourne Sanctionby Eric Van Lustbader
After so many adrenaline-soaked years risking his life, Jason Bourne is chafing under the quiet life of a linguistics professor. Aware of his frustrations, his academic mentor asks for help investigating the murder of a former student by a previously unknown extremist sect called the Black Legion. The young man died carrying information about the group's terrorist activities, including an immediate plan to attack the United States. In Europe, Bourne's investigation of the Black Legion turns into one of the deadliest and most tangled operations of his double life – the pursuit of the leader of a murderous terrorist group with roots in the darkest days of World War II.